Glassware forming machine



0m. 8, 1935?. c. c. KlNKl-:R 20l'6,374

GLASSWARE FORMING MACHINE Filed April 19, 1934 4 Sheets-Sheet l 1N VEN TOR.

A TTORNEY 8 1935- c. c. KINKER .2,016,374

l GLASSWARE FORMNG MACHINE Filed April 19, 1954 4 Sheets-Sheet 2 INVENTOR.

A TTORNEY 8, 1935. c. c. KINKER GLAS SWARE FORMING MACHINE Filed April 19, 1934 4 Sheets-Sheet 5 f mn/7&2?

.A y I Y IN V EN TOR.

w19 Brym ATTORNEY ott. 8, 1935. C. C, KgNKER 21,016,374

GLAS SWARE FORMING MACHINE Filed April 19', 1934 4 Sheets-Sheet 4 BY v WA TTORNEY Patented Oct. 8, 1935 UNITED STATES PATENT OFFIQE GLASSWARE FORMING MACHINE Application April 19, 1934, Serial No. 721,326

8 Claims.

The present invention relates to improvements in glassware forming machines and more particularly to mechanism for raising and lowering the mold bottom plates which are associated with the usual finishing or blow molds.

An object of the invention is the provision of mechanism actuated by the opening and closing movements of the finishing mold halves to impart the desired movement to the mold bottom plate.

Another object is the provision in mechanism of the above character of yielding connection between it and the means for opening and closing the mold to thereby minimize the danger of breaking or distorting any of the various parts of the mechanism.

A further object is the provision of mechanism of the above character in which the mold bottom plate and holder therefor may be adjusted with ease to compensate for variations in the height of the finishing molds.

Other objects will be in part apparent and in part pointed out hereinafter.

In the drawings:

Fig. 1 is a fragmentary plan view of one form of machine in which the invention may well be and is embodied.

Fig. 2 is a fragmentary sectional View taken substantially along the line II-II of Fig. 1.

Fig. 3 is a detail sectional elevational view showing the nishing mold open and the corresponding bottom plate in its lowermost position.

Fig. 4 is a sectional elevational View taken substantially along the line IV-IV of Fig. 2.

Fig. 5 is a sectional elevational View taken substantially along the line V-V of Fig. 2.

Fig. 6 is a sectional View taken along the line VI-VI of Fig. 4.

Fig. Y is a fragmentary front elevational View showing the finishing mold open and the corresponding bottom plate supported on a cam at the take-out position.

Fig. 8 is a detail sectional elevational view of the bottom plate holder and mechanism for raising and lowering it.

45 While the present invention is well adapted for embodiment in various types of bottle Vforming machines, it is for illustrative purposes shown herein in conjunction with the Well known Lynch machine which is completely disclosed in Patent 1,788,312 dated January 6, 1931, and to which patent reference may be made for details of construction and operation omitted in the present application and in fact constituting no part of my invention.

55 Briefly, the illustrated machine consists of blank and nishing mold tables l5 and I6 respectively, arranged side by side and rotated by mechanism Il operating through a pinion i3 which runs in mesh with ring gears I9 on said mold tables. A blank mold unit on the table 5 l5 brings blanks or parisons periodically toa blank transferring station T between the tables. At this station the blanks are transferred to iinishing molds 2l which are arranged in an annular series upon the finishing mold table I6.

Each finishing mold includes two sections 22 pivoted to a vertical hinge pin 23 and connected through links 24 to a slide block 25 which is mounted upon a pairv of radially extending guide rods 26 and carries a cam roll 21. This cam roll l5 2l, when the mold is standing at the blank transferring station, is adapted to be engaged by a mold closing device 23 (Figs. 1 and 2) which is common to all of the finishing molds and includes a horizontal piston motor 29 having a piston rod 20 3h. At the outer end of this piston rod is a disk 3|, which, when the motor is operated, engages the roll 21 on the slide block 25 causing said roll and slide block to move radially outward and close the mold about the blank B or parison.

Blowing mechanism M (Fig. 1) operates toexpand the blanks or parisons during one of the periods of rest of the molds and a take-out device D of conventional or any preferred form, removes the finished articles at the article removing station R and places them upright upon a machine conveyor C.

Associated with each finishing mold is a bottom plate 35 which may have a plunger 35 projecting upwardly therefrom or simply the conventional low crowned portion 3l on its upper face. This bottom plate is removably supported in the outer end of a pivoted arm 38 which is swung vertically into and -out of operative relation to the mold at regular time intervals in synchronism with the opening and closing movements of the iinishing mold sections 22. This mechanism which is actuated and directly controlled by operation of the slide block may well embody the following construction. This arm 38 is separably and vertically adjustably mounted upon a rockable carrier 39 which in turn is pivotedV to a horizontal hinge pin di) extending through and journaled in a bearing block 4l, the latter being attached to the nishing mold table I6. This arm 38 is 50 formed with a pair of clamping lingers 42 which engage a dove-tail slideway 43 on the carrier 39 and are firmly engaged with the latter under pressure applied by a clamping bolt 11.4 connecting said fingers. A lever 45 may be attached as by 55 finishing mold sections Z2 together.

means of bolts 46 to one end of the rockable carrier 39 (Figs. 4 and 6) and extendsradially inward through an opening 41 in the nnishing mold table l5 and at its inner end is pivoted to a yielding connector 48 through which motion is imparted to said lever from the mold closing and opening mechanism.

This yielding connector includes a collar 49 connected to the lever 45 by means of a hinge pin 55. Arranged within this collar 4S is a sleeve 5l of slightly greater length than the collar and within this sleeve is a rod 52 which is xed against movement relative to the latter. The opposite ends of this rod 52 are secured in a pair of eX- ternally threaded sleeves 53, one of which is connected by means of a horizontalhinge pin 54 to the slide block 25 of the mold opening and closing mechanism. A coil spring 55 encircles the rod 52 and upper sleeve 53 above the collar 49 and is confined between a washer 56 and spring tension adjusting nut 57. Below said collar 49 a coil spring 58 encircles said rod and the lower sleeve 53, this spring being conned between a washer 59 and a spring tension adjusting nut 60. An adjustable set screw 6l carried by the lever 45 is positioned to engage a part 62 of the nishing mold table to thereby limit'upward swinging movement of the bottom plate supporting arm 38 to insure proper positioning of the bottom plate preparatory to the final closing of the corresponding finishing mold.

in order to support the bottom plates against downward movement when the finishing molds open and prior to removal of bottles therefrom, a stationary track 63 (Figs. l, 2, and 8) is arranged at the article removing station R. This track includes a horizontal top surface 64 upon which the bottom plate rides as it approaches the article removing station and rests momentarily thereon at said station. A downwardly inclined top surface 55 at one end of this track allows the bottom plates to move downwardly after the nished articles have been removed from the finishing molds and the latter moved away from the article discharging position.

In operation, blanks or parisons are brought in succession to the blank transferring station T and suspended by the blank forming unit 28 in position to be enclosed by the finishing molds. Assuming that a blank is soY positioned and a finishing mold is standing at the blank transferring station, the next operation involves actu.- ation of the mold closing motor 28. This results in outward movement of the slide block 25 which operates through the links 24 to bring the Simultaneously with such outward movement of the slide block the connector 43 is moved to rock the lever 45 and thereby impart upward movement to the bottom plate supporting arm 33. Shortly after the slide block begins its orwardmovement the upper coil spring 55 is compressed to a degree bringing the corresponding washer 56 into engagement with the collar 49. At the time the rod 52 assumes a vertical position parallel or substantially parallel with the axis of the corresponding finishing mold, the bottom plate 35 will have l reached its uppermost position. Any over-travel of the connector beyond this vertical position to permit additional outward movement of the slide block in closing the mold, is permissible due to the presence of the coil spring 55 which functions as a safety feature preventing breaking or eX- cessive straining of any of the elements between the slide block 25 and hinge pin 4U. Upon arriving at a point slightly in advance of the article removing station the finishing mold is opened by engagement of the cam roll 2l with a stationary cam 66. Ordinarily such operation would be accompanied by lowering of the bottom plate and premature discharge of the finished article. However, due to the presence of the track 63, the bottom plates are supported in a horizontal plane during such opening ofthe finishing Vmold and while it stands at the article removing station during operation of the take-out device D. Although the bottom plate remains in position to support the finished article during and following the opening of the finishing mold, the

connector 48 is returned to its original positionV due to the inward 'travel of the slide block 25 involved in opening the finishing mold. Because the lever 45 cannot swing about the hinge pin 40 independently of movement of the bottom plate supporting arm 38, such return of the connector to its original position causes upward sliding movement or the rod 52 in the collar 49 and coinpression o the lower coil spring 58, Consequently, when the mold table is indexed to move the iinishing mold away from the article removing station this lower coil sprin 58 expands and insures lowering of the bottom plate and travel thereof alo-ng 'the downwardly inclined surface G5 of the track 53. Thus, the plate is positioned in a plane below that occupied by the bottom end of the blanks at the transferring station.

Modifications may be resorted to within the spirit and scope of the appended claims.

What I claim is:

l. In combination, a partible finishing mold, a bottom plate movable into and out of. cooperative relation to the mold, mechanism for opening and closing the mold, an arm supporting the plate, a lever rigidly attached to the arm, a connector between said arm and mechanism whereby operation of the latter rocks the lever and through it imparts vertical movement to the bottom plate, said connector comprising a collar pivoted to the free end of the lever, a .rod slidingly arranged in the collar and ext-ending beyond the opposite ends thereof, coil springs encircling the rod at opposite sides of the collar, and means for retaining said springs on the rod.

2. In combination, a partible finishing mold, a bottom plate movable into and out of cooperative relation to the mold, mechanism for opening and closing the mold, an arm supporting the plate, a lever rigidly attached to the arm, a connector between said arm and mechanism whereby operation of the latter rocks the lever and through it imparts vertical movement to the bottom plate, said connector comprising a collar pivoted to the free end of the lever, a rod slidingly arranged in the collar and .extending beyond the opposite ends thereof, coil springs encircling the rod at opposite sides of the collar, means con'ning the springs to predetermined areas of the rod, means for temporarily supporting the bottom plate againstdownward movement during opening of the mold to thereby coinpress one of said springs, and means for releasing the bottom plate whereby it is lowered under pressure created by expansion of said spring.

3. In combination, a partible finishing mold, mechanism including a horizontally movable slide block for opening and closing the mold, a bottom plate adapted `to close the lower end of the mold, a rockable carrier for the bottom plate, a lever attached to said carrier, a collar pivoted to the free end of the lever. a rod slidinglyextending through said collar, means pivotally connecting the upper end of the rod and said slide block, coil springs encircling the rod above and below said collar, and means whereby the coil spring below the collar is placed under tension during o-pening of the mold and thereafter is released to effect positive downward movement of the bottom plate.

4. In combination, a partible finishing mold, mechanism including a horizontally movable slide block for opening and closing the mold, a bottom plate adapted to close the lower end of the mold; a rockable carrier for the bottom plate, a lever attached to said carrier, a collar pivoted to the free end of the lever, a rod slidingly extending through said collar, means pivotally connecting the upper end of the rod and said slide block, coil springs encircling the rod above and below said collar, means interposed between the collar and adjacent ends of the springs forl denitely spacing the adjacent ends of the coil springs from each other and at times from said collar, and a spring tension adjusting nut engaging the outer end of each spring.

5. In combination, a partible nishing mold, mechanism including a horizontally movable slide block for opening and closing the mold, a bottom plate adapted to close-the lower end of the mold, a rockable carrier for the bottom plate, a lever attached to said carrier, a collar pivoted to the free end of the lever, a rod slidingly extending thro-ugh said collar, means pivotally connecting the upper end of the rod and said slide block, coil springs encircling the rod above and below said collar, spacing means interposed between the collar and adjacent ends of the coil springs, a spring tension adjusting nut-engaging the outer end of each spring, and means for supporting the bottom plate against downward movement during opening of the mold and thereby placing the lower spring under compression and thereafter releasing said spring to effect positive downward movement of the bottom plate.

6. In combination, a partible finishing mold comprising a pair of sections, a Vertical hinge pin upon which said sections are pivoted, a slide block, links connecting the slide block and mold sections, means for moving the slide block to thereby open and close the mold, a bottom plate adapted to close the lower end of the mold, an arm on which the bottom plate is supported, a

rockable carrier for said arm, a lever attached to 5 the carrier, a collar pivoted to the free end of said arm, a rod slidingly extending through said collar and connected at one end to the slide block, a coil spring encircling the rod between said collar and the slide block, and a coil spring 10 encircling the .rod below said collar.

'7. In combination, a partible finishing mold comprising a pair of sections, a vertical hinge pin upon which said sections are pivoted, a slide block, links connecting the slide block and mold 15 sections, means for moving the slide block to thereby open and close the mold,4 a bottom plate adapted to close the lower end of the mold, an arm on which the bottom plate is supported, a rockable carrier for said arm, a lever attached to the carrier, a collar pivoted to. the free end of said arm, a rod slidingly extending through said collar and connected at one end to the slide block, a coil spring encircling the rod between said collar and the slide block, a coil spring encircling the rod below said `collar, and means for holding the carrier and lever against movement during opening of the mold to thereby compress the lower coil spring and thereafter releasing said 30 carrier and lever for rocking movement due to expansion of said lower coil spring.

8. In combination, a partible iinishing mold, a bottom plate movable vertically into position to close the lower end of the mold, mechanism for 35 bottom plate into cooperative position relative 45 to the mold.

CLARENCE C. KINKER. 

